5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Melbourne Blocked Drains Plumbing on 17 Oct 2025

Blocked drains are a hassle that can disrupt your daily life. They can result in flooding, bad smells and even health risks. If not promptly dealt with blocked drains can lead to serious issues in your plumbing system, which can lead to expensive repairs or replacements.

Key Takeaways

  • The blockage of drains can affect your routine and result in the destruction of your home, bad smells, and even health risks.
  • Oil, grease and fat accumulation can build up on the pipes’ walls causing blockages; avoid pouring grease down the drain. Alternatively, use soap and hot water while cleaning dishes.
  • The roots of trees naturally expand in the ground to find nutrients that could cause severe damage to pipes and even completely block them leading to flooding; regularly maintain the trees surrounding drainage systems by pruning them.
  • The flushing of non-biodegradable products like wet towels, wipes and sanitary pads etc. can result in nasty smells emanating from bins and toilets. just wash toilet papers down drain.
  • Hair

In this article, we will examine five of the most common causes of blocked drains and the best way to keep them from happening.

Cause 1. Grease, Oil and fat buildup

Grease, oil and fat might appear to be harmless substances to pour down the drain however, over time, they begin to accumulate on the walls of the pipes, creating the pipes to become blocked. If this happens then water cannot flow freely through the drainpipes. The solution is to avoid pouring grease down the drain. Or make use of hot water and soap when cleaning dishes, as this helps dissolve greasy substances.

Cause 2: Tree Roots

Over time tree roots naturally extend themselves into the ground looking for nutrients. This results in them growing toward underground pipes. Once inside the pipes, trees roots can cause a lot of damage and can completely block them, causing flooding. It’s important therefore if you have trees nearby that you maintain the growth of your trees in the drainage system by trimming them on a regular basis.

Cause 3: Items that are soiled

It’s easy enough to believe that flushing items that aren’t biodegradable like the wet wipes, sanitary towel etc. shouldn’t cause a lot of problems in the long term, However, when a lot of these items are flushed in toilets, they’ll build up, pushing other items aside and in the way of pipes. This could create unpleasant smells around the toilets and bins too! Be aware of what needs to be flushed away and what should not (i. that only toilet paper needs to be flushed).

Cause 4 Cause 4: Hair

Additional Information

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Are you experiencing a clogged toilet, blocked shower drain, overflowing drains or an issue with your kitchen sink? We can help you sort out your drain blockage problem quickly and provide the following services:

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Clearing blocked drains can be difficult and it’s best to get a professional plumbing service involved to tackle it for you, To get your blocked drain in Melbourne cleared today, contact Melbourne Blocked Drains Plumbing now and speak to one of our friendly team members.

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